The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A158015 Primes p such that 6*p-1 is also prime. 10
 2, 3, 5, 7, 17, 19, 23, 29, 43, 47, 53, 59, 67, 103, 107, 109, 113, 127, 137, 157, 163, 197, 199, 227, 229, 239, 269, 283, 313, 317, 347, 359, 373, 379, 383, 389, 397, 439, 443, 449, 457, 463, 467, 523, 569, 577, 593, 599, 613, 617, 647, 653, 709, 733, 743, 773 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Solutions of the equation (6*n-1)'+n'=2, where n' is the arithmetic derivative of n. - Paolo P. Lava, Oct 31 2012 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 MATHEMATICA Flatten[Table[If[PrimeQ[n] && PrimeQ[6*n - 1], n, {}], {n, 1, 10000}]] Select[Prime[Range[200]], PrimeQ[(6 # - 1)]&] (* Vincenzo Librandi, Apr 14 2013 *) PROG (MAGMA) [p: p in PrimesUpTo(800) | IsPrime(6*p-1)]; // Vincenzo Librandi, Apr 14 2013 CROSSREFS Cf. A005382 for the type 2p-1, A062737 for 4p-1, A158016 for 8p-1, A158017 for 10p-1. Primes in A024898, i.e., intersection of A024898 with A000040. Sequence in context: A129692 A272441 A155471 * A042995 A108222 A090725 Adjacent sequences:  A158012 A158013 A158014 * A158016 A158017 A158018 KEYWORD nonn,easy AUTHOR Roger L. Bagula, Mar 11 2009 EXTENSIONS Edited by the Associate Editors of the OEIS, Apr 22 2009 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified April 18 10:56 EDT 2021. Contains 343087 sequences. (Running on oeis4.)